lcr meter chipset
TRANSCRIPT
Ver 1.4 21/10/13 A-1
ES168/ES169
LCR meter chipset
Features
• 19,999 counts LCD display
• LQFP-48L package for ES168
• LQFP-80L package for ES169
• Auto identification check and measurement
• Series/Parallel modes are selectable
• R/L/C with D/Q/ parameters
• Support DCR mode 20.000~20.00M
• 32 different test frequencies are available:
100-250k Hz
• Test ac signal level: 1.0/0.5/0.25VRMS typ.
• 5 range resistor range used
• Test range: (ex. F=1kHz)
L: 20.000 H ~ 2.0000 kH
C: 200.00 pF ~ 2.000 mF
R: 20.000 ~ 20.00M
• Multi-level battery voltage detector
• Support Backlight & Buzzer sound driver
• Source resistance depends on range
Typical: 120
• Support UART access.
• Open/Short calibration for AC impedance
measurement is allowed:
Open condition requirement: Impedance is
necessary to be larger than 9.5M @ 1kHz
Short condition requirement: Impedance is
necessary to be less than 1.1
Application
Handheld LCR bridge meter
Description
The chipset of ES169/ES168 is suitable for
LCR bridge application. By using
ES169/ES168 to implement the LCR bridge
meter, the complicated PCB design is not
necessary. The ES168 is the analog frond end
chip with resistor switches network to provide
different ranges control. It also provides a
high-performance integrated circuit by the
signal with different frequency to measure the
complex impedance of the DUT (device
under test). The ES169 is the mix-mode
processing chip to handle the calculation of
the D/Q/ parameter with R/L/C values. It
also provides the user interface and LCD
drivers to support dual display operation.
Tolerance function, limit function, hold
function, Max/Min. function and relative
function are including in the dual display
operation. A multiple-level battery detection
and auto power-off scheme are built-in to help
the improvement of battery life. The high
performance of 4 1/2 digits ADC circuit
design is implemented in the ES169/ES168
chipset. A fully smart measurement for L/C/R
is possible. User could measure the DUT
impedance simply without change function
key at the AI mode.
Ver 1.4 21/10/13 2
Content
Features .................................................................................................................... 1
Description ............................................................................................................... 1
Pin Assignment ........................................................................................................ 4
Pin Description ......................................................................................................... 4
Absolute Maximum Ratings .................................................................................... 7
Impedance Measurement ......................................................................................... 9
Introduction ...................................................................................................... 9
Measurement mode ........................................................................................ 10
Open/short calibration ..................................................................................... 11
Equivalent circuit ........................................................................................... 12
KEYPADS Configuration ...................................................................................... 13
OPERATION KEYPAD ........................................................................................ 14
1. Power ON/OFF ...................................................................................... 14
2. Auto Power Off ...................................................................................... 14
3. Backlight driver ..................................................................................... 15
4. Battery detection .................................................................................... 15
5. LCD test ................................................................................................. 15
6. Manual range/ auto range ....................................................................... 15
7. Hold ........................................................................................................ 15
8. Maximum, Minimum and Average ........................................................ 15
9. Sorting by tolerance mode ..................................................................... 16
10. Sorting by limit function ................................................................ 16
11. Relative function ............................................................................ 17
12. Auto identification function ........................................................... 17
13. Dissipation factor/ quality factor/ phase angle (D/Q/θ) ................. 18
14. Resistance, inductance, capacitance, and impedance measurement
18
15. Parallel/Series circuit mode (P/S) .................................................. 18
16. DC bias ........................................................................................... 18
17. Test signal amplitude ..................................................................... 19
18. Conversion rate ........................................... 錯誤! 尚未定義書籤。
19. ESR measurement .......................................................................... 19
20. DCR measurement ......................................................................... 19
21. Test frequency select ...................................................................... 20
Ver 1.4 21/10/13 3
22. Calibration function ....................................................................... 24
23. Power-on setup (PON setup) .......................................................... 24
Accuracy (Ae) vs. Impedance (ZDUT) .................................................................... 27
LCD Truth table ..................................................................................................... 29
UART Interface ...................................................................................................... 32
Application circuit ................................................................................................. 34
Package information (LQFP-48 7x7) ..................................................................... 37
Package information (LQFP-80) ............................................................................ 38
Ver 1.4 21/10/13 4
Pin Assignment
DT
H40
GN
DA
39
VS
RC
38
GN
DA
41
DT
L42
GN
DA
43
SW
144
SW
245
SW
346
SW
447
SW
548
CA2+1
CA2-2
RINT23
CINT2-4
CINT2+5
GNDA6
VR7
VRH8
VDDA9
VDDA10
OSC112
NC11
BU
ZO
UT
15
DA
TA
NE
W16
UB
17
CE
B18
SC
L19
SD
A20
IOC
TR
L21
VC
C22
GN
DD
23
VD
DD
14
OS
C2
13
NC26
NC35
VSSD25
VSSA27
VSSA28
RB29
TEST130
GNDA31
CINT1+32
CINT1-33
RINT134
CA1-36
CA
1+
37
GN
DD
24
U5
ES168
SEG311
SEG302
ICPDA3
ICPCK4
SEG295
SEG286
SEG277
SEG268
SEG259
SEG2410
SEG2311
SEG2212
SEG2113
SEG2014
SEG1915
SEG1816
SEG1717
SEG1618
SEG1519
SEG1420
SE
G13
21
SE
G12
22
SE
G11
23
SE
G10
24
SE
G9
25
VD
D26
VS
S27
SE
G8
28
SE
G7
29
SE
G6
30
SE
G5
31
BL
32
SE
G4
33
SE
G3
34
SE
G2
35
SE
G1
36
CO
M4
37
CO
M3
38
CO
M2
39
CO
M1
40
DRDY41
UB42
SCL43
SDA44
C245
C146
V247
V148
VMAX49
PLCD50
KEYOUT351
KEYOUT252
KEYOUT153
KEYOUT054
KEYIN255
KEYIN156
KEYIN057
NC58
NC59
APO_DIS60
AV
DD
61
PW
R62
PW
R_
KE
Y63
AV
SS
64
LB
AT
65
NC
66
NC
67
NC
68
SE
G37
69
SE
G36
70
RX
71
TX
72
SE
G35
73
NC
74
/RE
S75
VD
D76
VS
S77
SE
G34
78
SE
G33
79
SE
G32
80
ES169
Ver 1.4 21/10/13 5
Pin Description
ES169 Pin No Symbol Type Description
1-2 SEG31-SEG30 O LCD segment31-30 output
3 ICPDA I/O Data port for In-Circuit Programming
4 ICPCK I Clock port for In-Circuit Programming
5-25 SEG29-SEG9 O LCD segment29-9 output
26 VDD P Positive power supply, 3V
27 VSS P Negative power supply, ground
28-31 SEG8-SEG5 O LCD segment8-5 output
32 BL O Backlight driver output.
33-36 SEG4-SEG1 O LCD segment4-1
37-40 COM4-COM1 O LCD common output
41 DRDY I Data ready detection input
42 UB I Unbalance detection input
43 SCL O Serial bus clock
44 SDA I/O Serial bus data 45 C2 - LCD voltage pump 46 C1 - LCD voltage pump
47 V2 P LCD voltage pump
48 V1 P LCD voltage pump
49 VMAX P IC maximum voltage
50 PLCD P LCD power supply
51-54 KEYOUT3-
KEYOUT0
O Keypad output
55-57 KEYIN2-
KEYIN0
I Keypad input
58-59 NC - Not connected
60 APO DIS I Auto power disable detection input (Active high)
61 AVDD P Analog positive power supply, 3V
62 PWR O Power control output
63 PWR_KEY I Power keypad sense input 64 AVSS P Analog negative power supply, ground 65 LBAT I Battery voltage detection input
66-68 NC - Not connected
69-70 SEG37-SEG36 O LCD segment37-36 output
71 RX I Receive for UART input
72 TX O Transmit for UART output
73 SEG35 O LCD segment35 output
74 NC - Not connected
75 RES I External reset input
76 VDD P Positive power supply, 3V
77 VSS P Negative power supply, ground
78-80 SEG34-32 O LCD segment35-33 output
Ver 1.4 21/10/13 6
ES168 Pin No Symbol Type Description
1 CA2+ - External capacitor connection for AC filter
2 CA2- - External capacitor connection for AC filter 3 RINT2 - Integrator resistor connection 4 CINT2- - Integrator capacitor connection 5 CINT2+ - Integrator capacitor connection 6 GNDA P Analog power ground 7 VR I Reference voltage input (-1.0V typical)
8 VRH O Bandgap voltage output (-1.23V typical)
9 VDDA P Analog positive power supply
10 VDDA P Analog positive power supply
11 NC - Not connected
12 OSC1 O Oscillator input
13 OSC2 I Oscillator output
14 VDDD P Digital positive power supply
15 BUZOUT O Buzzer driver output
16 DRDY O Data ready output
17 UB O Unbalance output 18 CEB I Chip enable input (Active @VSSD) 19 SCL I Serial bus clock 20 SDA I/O Serial bus data 21 IOCTL - MCU level shift
22 VCC P MCU power supply
23 GNDD P Digital power ground
24 GNDD P Digital power ground
25 VSSD P Digital negative power supply
26 NC - Not connected
27 VSSA P Analog negative power supply
28 VSSA P Analog negative power supply
29 NC - Not connected
30 NC - Not connected
31 GNDA P Analog power ground
32 CINT1+ - Integration capacitor connection
33 CINT1- - Integration capacitor connection
34 RINT1 - Integration resistor connection
35 NC - Not connected
36 CA1- - External capacitor connection for AC filter
37 CA1+ - External capacitor connection for AC filter
38 VSRC O Source terminal for DUT
39 GNDA P Analog power ground
40 DTH I High sensed terminal for DUT
41 GNDA P Analog power ground
42 DTL I Low sensed terminal for DUT
43 GNDA P Analog power ground
44 SW1 O Range ratio resistor1 (100Ω) 45 SW2 O Range ratio resistor2 (1kΩ) 46 SW3 O Range ratio resistor3 (10kΩ) 47 SW4 O Range ratio resistor4 (100kΩ) 48 SW5 O Range ratio resistor5 (1MΩ)
Ver 1.4 21/10/13 7
Absolute Maximum Ratings
Characteristic Rating
Supply Voltage (VDD to VSS) 5V
Digital Input for ES168 VSSD -0.6 to GNDD + 0.6V
Digital Input for ES169 VSS -0.6 to VDD +0.6V
Power Dissipation. Flat Package 500mW
Operating Temperature -20℃ to 70℃
Storage Temperature -50℃ to 125℃
Electrical Characteristics
Table 1 Electrical characteristics
Parameter Symbol Test Condition Min. Typ. Max Units
3V Power supply
VDDD
VDDA
AVDD
VDD
— 3 — V
±3V Supply current
VDDD/VDDA =3V
VSSD/VSSA = -3V
AVDDD/VDD = 3V
IDD Open — 15 17 mA
DCR test signal level VDUT Open/Short — 11/0.981 — V
Testing signal amplitude (AC mode) VDUT Open — 1/0.5/0.25 — VRMS
Accuracy of testing signal amplitude
(AC mode) Ae Open — — ±9 %
Accuracy of testing signal frequency Ae 100-250kHz, Open — — ±0.12 %
Basic accuracy (F < 10kHz)
See Table 14 for details Ae 10-100k range — — ±0.2 %F.S2,3
Source Current (DC) VSRC VDDA = 3V,
VSSA = -3V, — 9.7 mA
Accuracy of DC bias level Ae 1 — — ±0.43 %
Temperature coefficient for basic
accuracy (Ae)
Tc -20℃<TA<70℃
ratio resistor=0ppm — — 100 ppm/℃
Band-gap reference voltage VBG
100KΩ resistor
between VRH and
VRL
-1.30 -1.22 -1.14 V
Peak-to-peak LCD drive voltage VCOM
VSEG — 3.0 — V
Multi-level low battery detector
Vt1
VREF=3V
VPOWER_SENSE
— 2.599 — V
Vt2 — 2.453 — V
Vt3 — 2.307 — V
Vt4 — 2.160 — V
1 Adjusting the VR to get a 1V DC output. 2 Full scale: 20000 counts 3 For best integral linearity of ADC, the metalized polypropylene film capacitor for CINT is necessary.
Ver 1.4 21/10/13 8
LCD bias voltage configuration
1/4 duty
1/3 bias
A-type waveform
Reference voltage input VREF VR-VRL -1010 -1000 -990 mV
TA=25℃
Ver 1.4 21/10/13 9
Impedance Measurement
Introduction
The ES169/ES168 chipset is a total solution for high accuracy LCR meter which
could measure Inductance/Capacitance/Resistance with secondary parameters including
dissipation factor(D), quality factor(Q), phase angle(), equivalent series/parallel
resistance(ESR or Rp). The chipset is fully auto ranging operation for AC impedance &
DC resistance measurement. Because of high integrated circuit design, a smart
measurement for L/C/R is possible (AI mode). It means the user could measure the
L/C/R components directly at AI smart mode without changing the function key. User
could also select the target test frequencies of 100Hz/120Hz/1kHz/10kHz/100kHz
depending on DUT type. Components could be measured in series or parallel mode
according to the DUT impedance automatically.
The LCR chipset built-in a 4.5 digits ADC operates at 1.2/s updating rate nominally
for L/C/R mode. The chipset operates at 0.5/s updating rate for DCR mode.
The general DMM could measure DC resistance only, but the LCR meter could
measure DC resistance and AC impedance. The impedance consists of resistance (real
part) and reactance (imaginary part). For example, Zs represents the impedance in series
mode. Zs can be defined a combination of resistance Rs and reactance Xs. It also could
be defined as a |Z| of magnitude with a phase angle .
Zs = Rs + jXs
| Zs |
Real axis
Imaginary axis (series mode)
Rs
Xs
Zs1 = Rs1 + jXs1Xs1
Rs11
> 0
< 0
Zs = Rs + jXs
| Zs |
Real axis
Imaginary axis (series mode)
Rs
Xs
Zs1 = Rs1 + jXs1Xs1
Rs11
> 0
< 0
Zs = Rs + jXs or |Zs|∠
Ver 1.4 21/10/13 10
|Z| = 22 XsRs +
Rs = |Zs| cos
Xs = |Zs| sin
Xs/Rs = tan
= tan-1(Xs/Rs)
If > 0, the reactance is inductive. In other words, if < 0, the reactance is capacitive.
There are two types for reactance. The one is the inductive reactance XL and the
other is the capacitive reactance XC. They could be defined as: (f = signal frequency)
XL = 2πf L (L = Inductance)
XC = C 2
1
f (C = Capacitance)
Measurement mode
The impedance could be measured in series or parallel mode. The impedance Z in
parallel mode could be represented as reciprocal of admittance Y. The admittance could
be defined as Y = G + jB. The G is the conductance and the B is the susceptance.
Rs: Resistance in series mode Rp: Resistance in parallel mode
Xs: Reactance in series mode Xp: Reactance in parallel mode
Cs: Capacitance in series mode Cp: Capacitance in parallel mode
Ls: Inductance in series mode Lp: Inductance in parallel mode
There are two factors to provide the ratio of real part and imaginary part. Usually
the quality factor Q is used for inductance measurement and the dissipation factor D is
used for capacitance measurement. D factor is defined as a reciprocal of Q factor.
Q = 1 / D = tan
Q = Xs / Rs = 2πf Ls / Rs = 1 / 2πf Cs Rs
Q = B / G = Rp / | Xp | = Rp / 2πf Lp = 2πf Cp Rp
Ver 1.4 21/10/13 11
Actually, Rs and Rp are existed in the equivalent circuit of capacitor or inductor. If
the capacitor is small, Rp is more important than Rs. If capacitor is large, the Rs is more
important also. Therefore, use parallel mode to measure lower value capacitor and use
series mode to measure higher value capacitor. For inductor, the impedance relationship
is different from capacitor. If the inductor is small, Rp is almost no effect. If inductor is
large, the Rs is no effect also. Therefore, use series mode to measure lower value
inductor and use parallel mode to measure higher value inductor.
Open/short calibration
The ES169/ES168 chipset provides the open/short calibration process to get the better
accuracy for high/low impedance measurement. The purpose of open/short calibration
is to reduce the parasitic effect of the test fixture.
ZM is defined as total impedance measured to DUT by the special test fixture which
has some parasitic impedance. ZM = (Rs + jLs) + (CojGo +
1 || ZDUT)
ZOUT is the target impedance user wants to realize. It is necessary to use the
open/short calibration process to cancel the effect of Rs + jLs and Go+jCo.
Rs Ls
Co Go ZDUTZM
Rs Ls
Co Go ZDUTZM
Ver 1.4 21/10/13 12
Equivalent circuit
ZSHORT
YOPEN ZDUTZMZM – ZSHORT
ZDUT =
1-(ZM-ZSHORT)YOPEN
ZSHORT
YOPEN ZDUTZMZM – ZSHORT
ZDUT =
1-(ZM-ZSHORT)YOPEN
Rs Ls
Co Go OPENYOPEN
If Rs+jLs << 1/(Go + jCo)
YOPEN = Go + jCo
Rs Ls
Co Go OPENYOPEN
If Rs+jLs << 1/(Go + jCo)
YOPEN = Go + jCo
Rs Ls
Co Go SHORTZSHORT
ZSHORT = Rs + jLs
Rs Ls
Co Go SHORTZSHORT
ZSHORT = Rs + jLs
Ver 1.4 21/10/13 13
KEYPADS Configuration
KEYIN0 KEYIN1 KEYIN2
KEYOUT0 Ai/Setup Freq Up/ESR
↑ HOLD/MMA .
KEYOUT1 DQθ/Limit
←
Freq Down/DCR
↓
Range/Auto
→
KEYOUT2 ZLCR/PAL_SER TOL%/BKLIT REL/CAL
Table 2. Push key function description
Keypads < 1 second > 1 second
AI/
SETUP Enable/disable the auto identification mode. Enter/exit setup menu.
Freq Up /
ESR
Select a test frequency.
See table 11.
Select a limit set in limit function.
Enable/disable the ESR (equivalent series
resistance) mode.
HOLD/
MMA .
Enter/re-enter hold function.
Selects Max., Min., Avg., and present reading in
MMA function.
Store parameters in setup mode.
Exit hold function.
Enable/disable MMA function.
DQθ/
Limit
Switches between D, Q, and θ.
Switches the upper/lower limit in limit function.
Enable/disable limit function.
Freq Down/
DCR
Selects a test frequency.
See table 11.
Selects a limit set in limit function.
Enable/disable DCR mode.
Range/
Auto
Disable auto range and sets a manual range.
Switches the upper/lower limit in limit function.
Enables auto range
ZLRC/
PAL_SER
Switches between R, L, C, and Z.
Cancel parameters changes or return to the
measure mode in setup mode.
Toggles between parallel and series circuit
mode.
Enter POR setup menu during initialization, see
to Power ON/OFF.
TOL%/
BKLIT Enable the tolerance function or select a
tolerance value.4
Enable/disable backlight.
REL/
CAL Enable/disable relative function. Enter/exit the user open/short calibration mode.
4 Each key, excluding the Tol%/BKLIT key, can exit the tolerance mode.
Ver 1.4 21/10/13 14
OPERATION KEYPAD
1. Power ON/OFF
Power ON:
The system will power on when press POWER key. after power-up, the ES169
drives the PWR pin to high to keep the system powered.
The LCR powers up in the auto identification mode when first time turned on.
User can change the power-on measurement mode by changing internal
parameters in POR setup mode. See Power-on setup (PON setup).
Power OFF:
The ES169 senses the POWER key. it drives the PWR pin low level to turn off the
system power when press POWER key.
2. Auto Power Off
ES169 automatically drives the PWR pin to low to turn off the system after 5
minutes (default) if no keys are pressed. Pressing any key will reset the timer
counter and keep system powered. An alarm will be issued before APO timer
count approaches the APO set time.
Ver 1.4 21/10/13 15
3. Backlight driver
Press TOL%/BKLIT key for more than 1 second to toggle the BL (pin32 of ES169) to
output high/low level. The BL will output low automatically, when the backlight
timer counter reaches the backlight set time.
4. Battery detection
The ES169 will detect the battery multi-level voltages periodically. The LCD
annunciators (BAT4 ~ BAT1) of battery life will be disappeared according to the
decreasing of battery voltage.
5. LCD test
Press Hold/MMA key for more than 1 second during power up to test the LCD. All
annunciators are displayed in the LCD. Press Hold/MMA key again to exit this
mode.
6. Manual range/ auto range
In auto ranging, the ES169 automatically selects an appropriate range to display the
highest available precision. Press Range/Auto key to switch the manual range
mode.
In manual, user can cycle through the Range/Auto key to select the range he wants.
Press Range/Auto key for more than 1 seconds to switch the auto range mode.
7. Hold
Press the Hold/MMA key to freeze the display for any measurement mode. The
Hold annunciator will show on the display while the Hold mode. Press the
Hold/MMA key again will update a new reading on the display. Press the
Hold/MMA key for more than 1 seconds to exit Hold mode.
8. Maximum, Minimum and Average
Press the Hold/MMA key for more than 1 seconds to enter MMA mode while any
measurement mode.
In MMA mode8
Press the Hold/MMA key again to cycle through follow display mode:
⚫ Max: the maximum reading5.
⚫ Min: the minimum reading6.
5 It will not update the maximum value if display value is OL.
Ver 1.4 21/10/13 16
⚫ Avg: the average reading.
⚫ MaxMinAvg: the current reading.
Press the Hold/MMA key for more than 1 seconds to exit MMA mode.
9. Sorting by tolerance mode
The tolerance ranges available are 1%, 5%, 10% and 20%.
To enable the tolerance mode:
⚫ Inset a component into the input, then press the TOL%/BKLIT key to set
the reading value7 as the standard reference tolerance.
⚫ In Hold mode or MMA mode, press the TOL%/BKLIT key to set the
display value7 as the standard reference tolerance.
In tolerance mode8:
⚫ The standard reference value is shown on the primary display.
⚫ Press TOL%/BKLIT to cycle through 1%, 5%, 10% and 20% tolerance.
⚫ Replace a component to start a new sorting.
⚫ It will beep three times if the component exceeds the set reference,
otherwise, when it beeps once, it indicates that the component is within
the set tolerance.
⚫ The tolerance error is shown as percentage on the secondary display.
⚫ Press any key to exit tolerance mode exclude TOL%/BKLIT key.
10. Sorting by limit function
User can use upper and lower limits for sorting. There are thirty-two limit set
available.
To enable the limit function:
⚫ Press the DQθ/Limit key for more than 1 second to enter limit function
while any measurement mode.
⚫ While the Limit annunciator is flashing, use the Freq Up/ESR or Freq
Down/DCR to select an appropriate limit set.
⚫ Press the DQθ/Limit or Range/Auto to toggle between the upper or
lower values shown on the primary display.
⚫ Press Hold/MMA to start sorting when the Limit annunciator flashing.
(If no key is pressed, sorting will also begin after 3 seconds.)
Limit function is enabled:
6 It will not update the minimum value if display is less than 50 counts. 7 The tolerance mode cannot be activated if display value is OL or less than 50 counts. 8 It will automatically switch to manual range if it is in auto range.
Ver 1.4 21/10/13 17
⚫ Insert component into input, the ES169 drive beeper to make three beeps
and display nGo on the secondary display if the reading is greater ▲
than the upper limit or lesser ▼ than the lower limit.
⚫ Insert component into input, the ES169 drive beeper to make once beep
and display Go on the secondary display if the reading is within upper
limit and lower limit.
⚫ Press the DQθ/Limit key for more than 1 second to disable limit
function.
11. Relative function
The reading value is the difference between the input value and the stored value.
To enable the relative function:
⚫ The present display value9 is stored as stored value when the Rel/Cal
key is pressed while measurement mode.
Relative function is enabled:
⚫ The Δ annunciator is shown on the display.
⚫ Press Rel/Cal key to disable relative function.
12. Auto identification function
The Ai function helps to identify R, L, and C measurements automatically
according to the angle of impedance detected from input. See Table 3.
To enable the auto identification function:
⚫ Press Ai/Setup to start auto identification function.
When auto identification function is enabled:
⚫ Selects an appropriate measurement for input.
⚫ Selects an appropriate range.
⚫ Selects parallel or series mode automatically.
Table 3. auto identification phase angle rule
Phase angle Primary display Secondary display
-θset < θ < +θset10 R θ
θ ≥ +θset L Q
θ ≤ -θset C D
9 The relative mode cannot be activated if the display value is OL. 10 The default θset is set to 10∘.
Ver 1.4 21/10/13 18
13. Dissipation factor/ quality factor/ phase angle (D/Q/θ)
Press DQθ/Limit key to cycle through dissipation factor, quality factor, and phase
angle while resistance, inductance, capacitance, or impedance measurement mode.
This setting is not application for DCR and ESR measurement.
14. Resistance, inductance, capacitance, and impedance measurement
i. Press the Freq Down/DCR or Freq Up/ESR to select a suitable test frequency.
ii. Press the ZLCR/Pal_Ser key to cycle through resistance, inductance,
capacitance and impedance measurement mode.
iii. Press the Ai/Setup to enable the auto identification function.
iv. Insert a component into the input.
v. Read the displays.
15. Parallel/Series circuit mode (P/S)
Press the ZLCR/Pal_Ser key for more than 1 second to toggle parallel or series
mode. In auto identification mode, it switches to parallel mode automatically if
impedance is greater than 10kΩ or switched to series mode automatically if
impedance is lower than 10kΩ.
16. DC bias
Use the DC bias to turn on the active components for measurement.
To enable DC bias:
i. Press the Ai/Setup for more than 1 second to enter setup menu.
ii. Press the DQθ/Limit or Range/Auto key to switch to DC menu.
iii. Press the Freq Up/ESR or Freq Down/DCR key to select DC bias level11,13.
iv. Press the Hold/Rec to confirm changes or press ZLCR/Pal_Ser to exit setup
menu.
Table 4. DC bias
LEVEL
DC bias 0V
1V
11 The DC bias level available are 0VDC, and 1VDC.
Ver 1.4 21/10/13 19
17. Test signal amplitude
Select an appropriate test signal amplitude to measure the component.
To change the test signal amplitude:
i. Press the Ai/Setup for more than 1 second to enter setup menu.
ii. Press the DQθ/Limit or Range/Auto key to switch to AC menu.
iii. Press the Freq Up/ESR or Freq Down/DCR key to select test signal
amplitude12,13.
iv. Press the Hold/Rec to confirm changes or press ZLCR/Pal_Ser to exit setup
menu.
Table 5. Test signal amplitude
Amplitude (RMS)
Test signal amplitude
1V
0.5V
0.25V
18. ESR measurement
Use the ESR measurement to measure the equivalent series resistance.
To enable ESR measurement:
⚫ Press Freq Up/ESR for more than 1 second to start ESR measurement.
When ESR measurement is enabled:
⚫ Select a suitable test frequency.
⚫ Press Freq Up/ESR for more than 1 second to exit ESR measurement.
19. DCR measurement
Use the DCR measurement to measure the resistance of component by 1VDC.
To enable DCR measurement:
⚫ Press Freq Down/DCR for more than 1 second to start DCR
measurement.
When ESR measurement is enabled:
⚫ Press Freq Down/DCR for more than 1 second to exit DCR
measurement.
12 The amplitude available are 1000m, 500m, and 250mVRMS. 13 The peak value of the test signal does not exceed 2.5V, including DC bias and AC amplitude.
Ver 1.4 21/10/13 20
20. Test frequency select
Press Freq Up key and Freq Down key to select the test frequency.( See Table 10.)
Ver 1.4 21/10/13 21
Table 6. resistance display range with frequency
Function Frequency Scale Range Resolution
RS/RP
100Hz
200.00 0.01
2.0000k 0.1
20.000k 1
200.00k 0.01k
2.0000M 0.1k
20.00M 1k
1kHz
20.000 1m
200.00 0.01
2.0000k 0.1
20.000k 1
200.00k 0.01k
2.0000M 0.1k
20.00M 1k
10kHz
20.000 1m
200.00 0.01
2.0000k 0.1
20.000k 1
200.00k 0.01k
2.0000M 0.1k
20.00M 0.01M
100kHz/200kHz/250kHz
20.000 1m
200.00 0.01
2.0000k 0.1
20.000k 1
200.00k 0.01k
2.000M 1k
Table 7. DC resistance display range
Function Scale Range Resolution
DCR
200.00 0.01
2.0000k 0.1
20.000k 1
200.00k 0.01k
2.0000M 0.1k
20.00M 1k
Ver 1.4 21/10/13 22
Table 8. Capacitance display range with frequency
Function Frequency Scale Range Resolution
CS/CP
100Hz
20.000nF 1pF
200.00nF 0.01nF
2000.0nF 0.1nF
20.000uF 1nF
200.00uF 0.01uF
2000.0uF 0.1uF
20.00mF 0.01mF
1kHz
2.0000nF 0.1pF
20.000nF 1pF
200.00nF 0.01nF
2000.0nF 0.1nF
20.000uF 1nF
200.00uF 0.01uF
2.000mF 1uF
10kHz
200.00pF 0.01pF
2000.0pF 0.1pF
20.000nF 1pF
200.00nF 0.01nF
2000.0nF 0.1nF
20.000uF 1nF
200.0uF 0.1uF
100kHz/200kHz/250kHz
200.00pF 0.01pF
2000.0pF 0.1pF
20.000nF 1pF
200.00nF 0.01nF
2000.0nF 0.1nF
20.00uF 0.01uF
Ver 1.4 21/10/13 23
Table 9. Inductance display range with frequency.
Function Frequency Scale Range Resolution
LS/LP
100Hz
20.000mH 1uH
200.00mH 0.01mH
2000.0mH 0.1mH
20.000H 1mH
200.00H 0.01H
2000.0H 0.1H
20.000kH 0.001kH
1kHz
2.0000mH 0.1uH
20.000mH 1uH
200.00mH 0.01mH
2000.0mH 0.1mH
20.000H 1mH
200.00H 0.01H
2.0000kH 0.1H
10kHz
200.00uH 0.01uH
2000.0uH 0.1uH
20.000mH 1uH
200.00mH 0.01mH
2000.0mH 0.1mH
20.000H 1mH
100kHz/200kHz/250kHz
20.000uH 0.001uH
200.00uH 0.01uH
2000.0uH 0.1uH
20.000mH 1uH
200.00mH 0.01mH
Table 10. frequency tuning
Tuning value Frequency
1.5 150Hz — 15kHz 150kHz
1.2 120Hz — 12kHz 120kHz
1.0 100Hz 1kHz 10kHz 100kHz
0.8 — 800Hz 8kHz 80kHz
0.6 — 600Hz 6kHz 60kHz
0.5 — 500Hz 5kHz 50kHz
0.4 — 400Hz 4kHz 40kHz
0.3 — 300Hz 3kHz 30kHz
0.25 — 250Hz — 25kHz
0.2 — 200Hz 2kHz 20kHz
Ver 1.4 21/10/13 24
21. Calibration function
The Calibration function corrects the system internal parameters as well as external
connector residues for precision measurement. It is recommended to do open/short
calibration before measurement.
i. Press Rel/Cal key for more than 1 second to enter calibration menu.
ii. Press Freq Up/ESR or Freq Down/DCR to switch open or short calibration.
iii. Press Hold/Rec to start calibration.
iv. Press Rel/Cal key for more than 1 second to exit calibration menu.
The CAL annunciator is shown on secondary display and flash during the
calibration process. After the open/short calibration is completed, the CAL
annunciator is constantly shown on secondary display and the ES169 will store the
calibration data in its ROM memory.
The open/short annunciator is constantly shown on primary display during the
calibration process. If the input is out of tolerance, the open/short annunciator will
flash.
22. Power-on setup (PON setup)
The setup menu allows user to change the default value for several functions.
Table 11. PON setup menu key function
Keypad Description
ZLCR/Pal_Ser Press and hold ZLCR/Pal_Ser while turning the
system ON to enter PON setup menu.
While the menu item is flashing, press
ZLCR/Pal_Ser to cancel the changes.
DQθ/Limit, Range/Auto Press DQθ/Limit or Range/Auto to setup through
the menu items.
Freq Up/ESR, Freq
Down/DCR Press Freq Up/ESR or Freq Down/DCR to enter
the item menu.
Press Freq Up/ESR or Freq Down/DCR again to
change the item value.
Press Freq Up/ESR or Freq Down/DCR for more
than 1 second to increase/ decrease a numerical
value faster.
HOLD/MMA . While the menu item is flashing, press
HOLD/MMA to save the changes.
Ver 1.4 21/10/13 25
Table 12. menu items
Parameter Value Default
value
Measurement type Ai, Z, L, R, C, ESR and
DCR
Ai
Testing signal
frequency
100Hz, 1kHz, 10kHz,
100kHz, 200kHz, 250kHz
1kHz
Z D, Q, or θ
Parallel or series
θ
Series
L D, Q, or θ
Parallel or series
Q
Series
R D, Q, or θ
Parallel or series
θ
Series
C D, Q, or θ
Parallel or series
D
Parallel
Ai (θ) 5°~45° 10°
Calibration
(open/short)
Factory or user Factory
Limit Factory or user
00~15
Factor
00
Limit (upper or lower) 0-19999 See Table 13
Uart (baud rate) 9600 or 19200 9600
Uart (parity) Even, odd or none None
Uart (data bits) 7 bits or 8 bits 7 bits
Beep frequency 1k, 1.33k, 2k, 2.22k, 2.667k,
3.080k, 3.333k, 4kHz
1kHz
Lock keypad OFF or ON OFF
APO OFF – 99 minutes 5 minutes
Backlight OFF – 99 seconds 30 seconds
Reset Reset to factory value
Ver 1.4 21/10/13 26
Table 13. Limit set
Set Upper limit (H) Lower limit (L)
00 1000 900
01 1200 1080
02 1500 1350
03 1800 1620
04 2200 1980
05 2700 2430
06 3300 2970
07 3900 3510
08 4700 4230
09 5600 5040
10 6800 6120
11 8200 7380
12 10000 9000
13 12000 10800
14 15000 13500
15 18000 16200
Ver 1.4 21/10/13 27
Accuracy (Ae) vs. Impedance (ZDUT)
Table 14. Accuracy (Ae) vs. Impedance (ZDUT) @ Ta =18 ~ 28 ℃, 1.0 / 0.5VRMS
Z
Freq.
1Ω
~0.1Ω14
10Ω
~1Ω14
100KΩ
~10Ω
1MΩ
~100KΩ
10MΩ
~1MΩ Remark
DCR 1.0%+5d 0.5%+3d 0.3%+2d 0.5%+3d 1.0%+5d
D<0.1
100Hz 1.0%+5d 0.5%+3d 0.3%+2d 0.5%+3d 2%+5d
1kHz 1.0%+5d 0.5%+3d 0.3%+2d 0.5%+3d 2%+5d
10kHz 1.0%+5d 0.5%+3d 0.3%+2d 0.7%+3d 2%+5d
100kHz 2.0%+5d 1.0%+5d 0.5%+3d 1%+5d
200kHz 2.0%+5d 1.0%+5d 0.5%+3d 3%+5d
250kHz 2.0%+5d 1.0%+5d 0.6%+3d 4%+5d
Note: All accuracy is guaranteed by proper ratio resistor calibration and open/short
calibration. All accuracy is guaranteed for 10cm distance from VDUTH/VDUTL pins of
ES168.
The higher the DC bias level or the lower the testing signal amplitude, the worse the
accuracy.
If D > 0.1, the accuracy should be multiplied by 21 D+
ZC = 1/2πf C if D << 0.1 in capacitance mode
ZL = 2πf L if D << 0.1 in inductance mode
Sub-display parameters accuracy
Ae = impedance (Z) accuracy
Definition: Q = D
1
Rp = ESR (or Rs) (1+ 21
D)
1. D value accuracy De = + Ae (1+D)
2. ESR accuracy Re= + ZM Ae ()
ie., ZM = impedance calculated by fC2
1 or 2πf L
3. Phase angle accuracy e= + (180/) Ae (deg)
14 The accuracy does not apply to measure 0.1Ω to 10Ω when DC bias is added. The error increased by
more than 1%.
Ver 1.4 21/10/13 28
4-terminals measurement with guard shielding
The DUT test leads are implemented by four terminals measurement. For achieve the accuracy
shown above, it is necessary to do open/short calibration process before measurement. The
test leads for DUT should be as short as possible. If long extended cable is used, the
guard shielding is necessary.
Ver 1.4 21/10/13 29
LCD Truth table
Table 15. LCD truth table
LCD Segment COM1 COM2 COM3 COM4
SEG01 delta tol hold pc
SEG02 fd1-3 fd1-1 fd1-2 ai
SEG03 fd1-6 fd1-4 fd1-7 fd1-5
SEG04 fd2-3 fd2-1 fd2-2 Z
SEG05 fd2-6 fd2-4 fd2-7 fd2-5
SEG06 fd3-3 fd3-1 fd3-2 L
SEG07 fd3-6 fd3-4 fd3-7 fd3-5
SEG08 k1 hz M1 R
SEG09 td1-3 td1-1 td1-2 C
SEG10 td1-6 td1-4 td1-7 td1-5
SEG11 td2-3 td2-1 td2-2 td2-8
SEG12 td2-6 td2-4 td2-7 td2-5
SEG13 D MINUS1 Q %1
SEG14 sd1-3 sd1-1 sd1-2 sd1-8
SEG15 sd1-6 sd1-4 sd1-7 sd1-5
SEG16 sd2-3 sd2-1 sd2-2 sd2-8
SEG17 sd2-6 sd2-4 sd2-7 sd2-5
SEG18 sd3-3 sd3-1 sd3-2 sd3-8
SEG19 sd3-6 sd3-4 sd3-7 sd3-5
SEG20 BEEP degree %2
SEG21 ESR
SEG22 AVG MIN MAX
SEG23 AUTO Parallel (P) Series (S)
SEG24 B1 B2 B3 B4
SEG25 H F S OHM
SEG26 n(m) u k2
SEG27 r(m) P M2
SEG28 md5-6 md5-4 md5-7 md5-5
SEG29 md5-3 md5-1 md5-2 md5-8
SEG30 md4-6 md4-4 md4-7 md4-5
SEG31 md4-3 md4-1 md4-2 md4-8
SEG32 md3-6 md3-4 md3-7 md3-5
SEG33 md3-3 md3-1 md3-2 md3-8
SEG34 md2-6 md2-4 md2-7 md2-5
SEG35 md2-3 md2-1 md2-2 md2-8
SEG36 md1-1 md1-2 apo
SEG37 Limit up MINUS2 down
Ver 1.4 21/10/13 30
LCD configuration
LCD display active condition
LCD annunciates Condition
PC Remote access indicator
Hold HOLD function is enabled
Tol Tolerance function is enabled
Delta Relative function is enabled
fdm-n Testing frequency or DCR display
K1, M1, Hz Units for testing frequency
tdm-n Tolerance display
%1 Units for Tolerance
D Dissipation factor indicator
Q Quality factor indicator
Phase angle of impedance indicator
%2 Measurement units for tolerance
MINUS1, sdm-n Secondary display
Beep Alert indicator for sorting
Ai Auto identification function is enabled
Z Impedance measurement indicator
L Inductance measurement indicator
R Resistance measurement indicator
C Capacitance measurement indicator
ESR ESR measurement indicator
Max, Min, Avg MMA function is enabled
Auto Auto range function is enabled
Limit Limit for sorting indicator
up Reading out of upper limit
Down Reading out of lower limit
APO Auto power-off indicator
MINUS2, mdm-n Primary display
Parallel (P) Parallel mode indicator
Series (S) Series mode indicator
p, u, m, k, M, F, H,
ohm, S Measurement units for primary display
B1, B2, B3, B4 Battery voltage indicator
Ver 1.4 21/10/13 31
LCD COM/SEG driver output
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
COM1
COM2
COM3
COM4
LCD SEGn ON when
COM3 is active
1/4 duty 1/3 bias frame rate 62.5Hz
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
V1
V2
V3
VSS
COM1
COM2
COM3
COM4
LCD SEGn ON when
COM3 is active
1/4 duty 1/3 bias frame rate 62.5Hz
Ver 1.4 21/10/13 32
UART Interface
Baud rate 9600/19200 bps
Start bit 1 bit
Data bits 7/8 bits
Stop bit 1 bit
Parity none/ odd/ even
User can access the system through UART interface. The system receives the command,
it enters remote function and PC annunciator is shown on display. The system sends
impedance readings via the UART when it receives “READ?” command. Press any key
to exit remote function.
Table 16. command table
Change testing signal frequency
Command <value> Hz
Response OK
Example: “10kHz;”. When the command is received, the system changes the test
signal frequency to 10 kHz.
Change measurement type
Command TYPE {<value>| Ai | ESR | R | L | C | Z |}, {<mode>| PARALLE | SERIES |}
Response OK
Example: “TYPE R, SERIES”. When the command is received, the system changes
the measurement type to resistance measurement and series mode.
Change testing signal amplitude
Command AC {<value>| 1 | 0.5 | 0.25 |}
Response OK
Example: “AC 1”. When the command is received, the system changes the test signal
amplitude to 1VRMS.
Change DC bias level
Command DC {<value>| 0 | 1 |}
Response OK
Example: “DC 1”. When the command is received, the system changes DC bias to
1VDC.
Change conversion rate
Command INT {<value>| 0 | 1 | 2 |}
Response OK
Example: “INT 1”. When the command is received, the system will change the
conversion rate to 200 milliseconds.
Read impedance value and primary display value
Command READ?
Response See Table 17
Example: “READ?”. When the command is received, the system continuously send
read value to PC.
Ver 1.4 21/10/13 33
Table 17. read command response
Frequency Parallel/Series R/L/C/Z/DCR/ESR R+Xj
Frequency Freq:<value>
Parallel or series mode <parallel, series>
R/L/C/Z/DCR/ESR Current measurement mode indication
R +Xj Real part and imaginary part
Ver 1.4 21/10/13 34
Application circuit
BZ
1
Buzzer
BU
ZO
UT
+
C22
10uF
V+
C23
0.1
uF
C20
0.1
uF
V-
+C
19
10uF
AG
ND
AG
ND
DTH40
GNDA39
VSRC38
GNDA41
DTL42
GNDA43
SW144
SW245
SW346
SW447
SW548
CA
2+
1
CA
2-
2
RIN
T2
3
CIN
T2-
4
CIN
T2+
5
GN
DA
6
VR
7
VR
H8
VD
DA
9
VD
DA
10
OS
C1
12
NC
11
BUZOUT15
DATANEW16
UB17
CEB18
SCL19
SDA20
IOCTRL21
VCC22
GNDD23
VDDD14
OSC213
NC
26
NC
35
VS
SD
25
VS
SA
27
VS
SA
28
RB
29
TE
ST
130
GN
DA
31
CIN
T1+
32
CIN
T1-
33
RIN
T1
34
CA
1-
36
CA1+37
GNDD24
U5
ES
168
R36 100
R37 100
R38 100
HPOT
HCUR
LPOT
C14
220nF
R42
100K
C13
22uF
AG
ND
AG
ND
V+
VR
210K
R45
33K
AG
ND
AG
ND
C17
300pF
VR
HV
R_L
CLCURR35 100
R34 1KR33 10KR32 100KR31 1M
C15
220nF
R43
100K
AG
ND
V-
C12
22uF
AG
ND
UBoutDRDY
MCU_VSS
BUZOUT
CEBSCLSDA
MCU_VCC
Y1
24M
Hz
DG
ND
V+
VR
HV
R_L
C
VR
->D
CR
=1V
V-
VR
H1 TP
4
VR
H
R48
20K
V-
Metallized
Poly
pro
pylen
e Film
CA
P : C
15, C
14
Mylar o
r NP
O C
eramic C
AP
: C13 , C
12
1 2 3 4 5 6
P4
MC
U_V
CC
MC
U_V
SS
SD
AS
CL
DR
DY
UB
out
R39
10K
R40
10K
MC
U_V
CC
HP
OT
HC
UR
LC
UR
LP
OT
HC
UR
HP
OT
LC
UR
LP
OT
GU
AR
D
C18
20nF
C34
5pF
AG
ND
10M
Q?
2N
7002
AG
ND
VB
AT
34k
2N
3906
100
VB
AT
ES168 Circuit
Ver 1.4 21/10/13 35
DRDY
SCLSDA
MC
U_
VS
SM
CU
_V
CC
CO
M0
CO
M1
CO
M2
CO
M3
SE
G0
SE
G1
SE
G2
SE
G3
SE
G4
SE
G5
SE
G6
SE
G7
SE
G8
SE
G9
SE
G10
SE
G11
SE
G12
SEG13SEG14SEG15SEG16SEG17SEG18SEG19SEG20SEG21SEG22SEG23SEG24SEG25SEG26SEG27SEG28
SEG31SEG32
SE
G33
SE
G34
SE
G35
SE
G37
SE
G39
SE
G40
KEY_OUT0
KEY_OUT1
KEY_OUT2
KEY_OUT3
KE
Y_
IN2
KE
Y_
IN1
KE
Y_
IN0
SW2
Ai
SW3
Freq_T/ESR
SW4
Hold
SW5
DQƟ
SW6
Freq.
SW7
Range
SW8
ZLCR
SW10
Δ NULL
SW9
Tol%
SW11
KEY41
SW12
KEY42
SW13
KEY43
BL
UBout
SE
G0
SE
G1
SE
G2
SE
G3
SE
G4
SE
G5
SE
G6
SE
G7
SE
G8
SE
G9
SE
G19
SE
G20
SE
G21
SE
G22
SE
G23
SE
G24
SE
G25
SE
G26
SE
G27
SE
G28
SE
G31
SE
G32
SE
G33
SE
G34
SE
G35
/RES
TX
KEY_IN0KEY_IN1KEY_IN2KEY_OUT0KEY_OUT1KEY_OUT2KEY_OUT3
C11 0.1uF
C10 0.1uF
MCU_VSSC9 0.1uF
MCU_VSS
D4 LED
R27 10K
R25 300
Q72N3904
BL
MC
U_
VC
CM
CU
_V
SS
APO_DIS
PW
R
MC
U_
AV
SS
PW
R_
KE
Y1
RX
MC
U_
AV
DD
SW1
POWER
PWR_KEY
VPPTC
PW
R_
SE
N
1234
P2
UART
MCU_VCCMCU_VSSRXTX
1234
P1
ICP
MCU_VCCMCU_VSSICPDAICPCK
ICPDAICPCK
CO
M0
CO
M1
CO
M2
CO
M3
CO
M1
1
CO
M2
2
CO
M3
3
CO
M4
4
SE
G1
5
SE
G2
6
SE
G3
7
SE
G4
8
SE
G5
9
SE
G6
10
SE
G7
11
SE
G8
12
SE
G9
13
SE
G10
14
SE
G11
15
SE
G12
16
SE
G13
17
SE
G14
18
SE
G15
19
SE
G16
20
SE
G17
21
SE
G18
22
SE
G19
23
SE
G20
24
SE
G21
25
SE
G22
26
SE
G23
27
SE
G24
28
SE
G25
29
SE
G26
30
SE
G27
31
SE
G28
32
SE
G29
33
SE
G30
34
SE
G31
35
SE
G32
36
SE
G33
37
SE
G34
38
SE
G35
39
SE
G36
40
SE
G37
41
CO
M4
42
CO
M3
43
CO
M2
44
CO
M1
45
CON1LCD
SE
G39
SE
G40
SE
G37
R46100K
MCU_VCC
MCU_VSS
C80.1uF
C70.1uF
/RE
S
C28 0.1uF
C27 0.1uF
MCU_AVSS
MCU_VSS
C29 0.1uF
TXD1
DTR2
RST3
VDD_3254
RXD5
RI6
GND7
NC8
DSR9
DCD10
CTS11
SHTD12
GP313
GP214
DP15
DN16
VO_3317
GND18
RESET19
VDD_520
NC21
GP022
GP123
NC24
TEST26
NC27
RESERVED28
GND25
U2
PL2303HZ
C310.1uF
RX
TX
D_ND_P
VO33
C330.1uF
C320.1uF
1TP2
TP
+5VVO33
MCU_VCC
SEG311
SEG302
ICPDA3
ICPCK4
SEG295
SEG286
SEG277
SEG268
SEG259
SEG2410
SEG2311
SEG2212
SEG2113
SEG2014
SEG1915
SEG1816
SEG1717
SEG1618
SEG1519
SEG1420
SE
G13
21
SE
G12
22
SE
G11
23
SE
G10
24
SE
G9
25
VD
D2
6
VS
S2
7
SE
G8
28
SE
G7
29
SE
G6
30
SE
G5
31
BL
32
SE
G4
33
SE
G3
34
SE
G2
35
SE
G1
36
CO
M4
37
CO
M3
38
CO
M2
39
CO
M1
40
DRDY41
UB42
SCL43
SDA44
C245
C146
V247
V148
VMAX49
PLCD50
KEYOUT351
KEYOUT252
KEYOUT153
KEYOUT054
KEYIN255
KEYIN156
KEYIN057
NC58
NC59
APO_DIS60
AV
DD
61
PW
R6
2P
WR
_K
EY
63
AV
SS
64
LB
AT
65
NC
66
NC
67
NC
68
SE
G3
76
9S
EG
36
70
RX
71
TX
72
SE
G3
57
3N
C7
4/R
ES
75
VD
D7
6V
SS
77
SE
G3
47
8S
EG
33
79
SE
G3
28
0
ES169
+5V
VBUSD-D+ID
GNDHO
LD
0
USB1
USB-MINI
D_PD_N
R53 27
R5427R55
1.5k
VO33
FBM1PT800S
+C30
10uF
FBM2PT800S
D1_PD1_N
VBAT
ES169 Circuit
Ver 1.4 21/10/13 36
Power circuit
R41
500k
R44
1M
C16
0.1
uF
LD
O_G
ND
VinP
WR
_S
EN
C4
4.7
uF
V-
BA
T4.5
VB
AT
TE
RY
Q3
2N
3904
Q4
2N
3904
Q1
AC
E2301
R9
10M
R12
100K
R11
10M
R18
100K
R21
100K
12
J1+5V
VB
AT
+5V
LD
O_G
ND
D1
FM
5817
D2
FM
5817
+5V
R10
1M
R13
10K
Q2
AC
E2301
C3
0.1
uF
R22
1M
C6
0.1
uF
R16
500K
+5V
AP
O_D
IS
Q6
2N
3904
Q5
2N
3904
LD
O_G
ND
D3
1N
4148
R17
10K
R19
220K
PW
R
PW
R_K
EY
R23
100K
R20
100K
R24
100K
LD
O_G
ND
MC
U_V
CC
Vin
R8
0M
CU
_V
CC
MC
U_V
SS
PW
R_K
EY
1
VP
PT
C
V+
R4
0M
CU
_A
VD
D
MC
U_A
VS
S
R15
0
AG
ND
DG
ND
R5
0
PG
GO
D1
FB
+2
VIN
3
GN
D4
CP
5
OU
T-
6F
B-
7E
N-
8C
1-
9C
1+
10
OU
T+
11
EN
+12
THERMAL0
U1
LM
27762
LD
O_G
ND
C1
1uF
C2
4.7
uF
C5
4.7
uF
Ccp
1uF
R49
750k
R51
732k
R50
499k
R52
499k
Rpu
10k
LD
O_G
ND
LD
O_G
ND
LD
O_G
ND
+3V
-3V
-3VLD
O_G
ND
LD
O_G
ND
Vin
LD
O_G
ND
+3V
Vin
Vin
-3V
+3V
R6
0
Ver 1.4 21/10/13 37
Package information (LQFP-48 7x7)
Ver 1.4 21/10/13 38
Package information (LQFP-80)